Conformation‐Confined Organic Butterfly‐Molecule with High Photoluminescence Efficiency, Deep‐Blue Amplified Spontaneous Emission, and Unique Piezochromic Luminescence DOI

Shuting Dai,

Xiao-Ze Li, Jiawen Liu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Abstract Organic fluorophores with tunable π‐conjugated paths have attracted considerable attention owing to their diverse properties and promising applications. Herein, we present a tailored butterfly‐like molecule, 2,2’‐(2,5‐bis (2,2‐diphenylvinyl)‐1,4‐phenylene)dinaphthalene (BDVPN), which exhibits photophysical features in its two polymorphs. The BP phase crystal, “aligned wings” conformation, possesses emissive characteristics that are nearly identical those dilute solutions. In contrast, the BN adopts an “orthogonal unusual hypsochromic‐shifted emission compared solution counterparts. This intriguing originates from reduction effective conjugated length of molecular skeleton. Notably, crystals also exhibit exceptional optical performance, featuring high‐efficiency (76.6 %), low‐loss waveguides (0.571 dB mm −1 ), deep‐blue amplified spontaneous (ASE) narrow full width at half maximum (FWHM: 6.4 nm), unique 200 nm bathochromic shift piezochromic luminescence.

Language: Английский

Intrinsic Narrowband Blue Phosphorescent Materials and Their Applications in 3D Printed Self‐monitoring Microfluidic Chips DOI

Shuting Kong,

Hailan Wang,

Jimeng Liao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Organic room-temperature phosphorescent (RTP) materials, especially with narrowband emission properties, exhibit great potential for applications in display and sensing, but have been seldom reported. Herein, a rare example of the intrinsic blue RTP material is fabricated A series indolo[3,2,1-kl]phenothiazine derivatives, named Cphpz, 1O-Cphpz, 2O-Cphpz, are designed synthesized. Due to their relatively rigid structures, these three compounds showed deep emissions ranging from 396 434 nm full width at half maximum (FWHM) 31, 26, 31 nm, respectively. To delight, compound 2O-Cphpz displayed 448 FWHM 36 long-lived lifetime 1.08 s hydroxyethyl acrylate acrylic acid matrix. Photophysical studies, single crystal analyses, TD-DFT calculations performed elucidate further relationships between molecular structures properties. Meanwhile, because highly sensitive humidity, visualizing droplet path optical microfluidic chip efficiently through digital light processing 3D printing.This work provides reliable strategy realize expand self-monitoring printed structures.

Language: Английский

Citations

9
Stacked Scintillators Based Multispectral X‐Ray Imaging Featuring Quantum‐Cutting Perovskite Scintillators With 570 nm Absorption‐Emission Shift DOI Open Access
Juan Hui,

Peng Ran,

Yirong Su

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Traditional energy‐integration X‐ray imaging systems rely on total intensity for image contrast, ignoring energy‐specific information. Recently developed multilayer stacked scintillators have enabled multispectral, large‐area flat‐panel (FPXI), enhancing material discrimination capabilities. However, increased layering can lead to mutual excitation, which may affect the accurate of energy. This issue is tackled by proposing a novel design strategy utilizing rare earth ions doped quantum‐cutting as top layer. These create new luminescence centers via energy transfer, resulting in significantly larger absorption‐emission shift, well potential double photoluminescence quantum yield (PLQY) and enhance light output. To verify this concept, three‐layer scintillator detector using ytterbium (Yb 3+ )‐doped CsPbCl 3 perovskite nanocrystals (PeNCs) layer, offers high PLQY over 100% significant shift 570 nm. configuration, CsAgCl 2 Cs Cu I 5 middle bottom layers, respectively, ensures non‐overlapping optical absorption radioluminescence (RL) emission spectra. By calculating optimal thickness each layer absorb specific energies, demonstrates distinct differences across various bands, identification materials with similar densities.

Language: Английский

Citations

1
Top-down approach for easy processing, cost-effective, biodegradable chiral photonic materials with spontaneous circularly polarized room-temperature phosphorescence activity DOI
Hao Wang, Yi Qian,

Qiongya Li

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160357 - 160357

Published: Feb. 1, 2025

Language: Английский

Citations

1
Room-Temperature Phosphorescence from Bamboo Fibers and Designed Materials DOI Creative Commons
Yingxiang Zhai, Jingyi Zhou,

Ben Dang

et al.

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1119 - 1126

Published: Feb. 20, 2025

Language: Английский

Citations

1
Thermal‐Adaptive Photonic MOFs for High‐Performance X‐ray Scintillator DOI Open Access
Hongjun Li,

Qianghui Dong,

Yi Li

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Dynamic responsive scintillating materials play a significant role in advanced radiation detection technology. However, the issues such as thermal quenching, uncontrollable structure, and unsatisfactory cost, still remain obstacles to diversified development of recent scintillators. Herein, strategy is proposed by assembling well‐designed inorganic organic building units with low cost construct series novel lanthanide MOFs for thermal‐adaptive X‐ray scintillators (TAXS). Based on delicate energy level design, as‐obtained TAXS present ultra‐high relative light yield (max ≈49 700 photons MeV −1 ), tunable luminescence (from green red band), dose rate limit (min ≈118.7 nGy air s ). Importantly, these exhibit unique behaviors including thermal‐facilitated metal‐ligand distance contraction X‐ray‐induced carrier generation, resulting obvious enhanced radio‐luminescence. They maintain perfect linear response (R 2 > 99.8%) excellent stability (>95% after 215 Gy irradiation) during heat treatment. Both TAXS‐based membranes high imaging resolution ≈24 lp mm ) inks customizable printing demonstrate potential work normally at elevated temperatures. Such supports photonic functional fabricate high‐performance harsh condition services.

Language: Английский

Citations

1
Lone Pairs-Mediated Multiple Through-Space Interactions for Efficient Room-Temperature Phosphorescence DOI
Fulong Ma, Bo Wu, Siwei Zhang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

The simultaneous generation and stabilization of triplet excitons are the key to realizing efficient organic room temperature phosphorescence (RTP), which is challenging owing obscure mechanism structure-property relationships. Herein, a strategy lone-pair-mediated multiple through-space interactions (TSIs) proposed availably induce RTP. By incorporating heteroatoms facilitate n-n n-π interactions, lone pairs delocalized throughout structure, resulting in dense splitting excited-state energy levels. Thus, more matched levels with small gap between singlet states (ΔEST) emerge, intersystem crossing (ISC) transition channels that assist generation. strong TSIs also effectively rigidify molecular structures thus stabilize for radiation. Furthermore, manipulation TSI intensity allows efficiency enhancement, persistent time prolongation, tolerance high temperatures This work not only explores fundamental principle RTP from new view but provides universal ISC promotion triple stabilization.

Language: Английский

Citations

1
Versatile room temperature phosphorescence polymer with luminophore content as low as 0.05 wt% DOI

Wen Deng,

Ze Ping Zhang, Min Zhi Rong

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153443 - 153443

Published: June 28, 2024

Language: Английский

Citations

4
Polymorphism Steered Thermochromism in a Sulfonamide DOI

Asif A. Malik,

Zeinab M. Saeed, Ishtiyaq Ahmad

et al.

ACS Applied Optical Materials, Journal Year: 2024, Volume and Issue: 2(8), P. 1709 - 1720

Published: Aug. 12, 2024

Color polymorphism is a rare but intriguing phenomenon, crucial for fundamental understanding and with broad implications number of industries. We report the facile preparation six color polymorphs (forms I–VI) sulfonamide. All forms have been structurally characterized, studies attribute to molecular rotations about C═N–C–C dihedral (torsion 1). A definite correlation between wavelength value torsion 1 has established, indicating tendency red-shift decrease in values 1. Remarkable reversible (four forms) irreversible (two thermochromism arises due controlled small large angle rotations, respectively. Conformational energy scans suggest that are located one two basins. Computational crystal structure prediction (CSP) was performed, taking into account flexibility correctly locate all on form landscape. The temperature-induced enantiotropic phase transition III IV rationalized using free calculations within harmonic approximation. Overall, this work reports record simple compound striking chromism thermochromic behavior emphasizes importance joint experimental computational approach controlling conformationally flexible organic molecules.

Language: Английский

Citations

4
Air-stable and ultralong room-temperature phosphorescence from doped poly(methyl methacrylate) for visual detection of volatile organic compounds DOI
Jiaju Shi, Wen‐Jie Tao, Yusheng Zhou

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155737 - 155737

Published: Sept. 1, 2024

Language: Английский

Citations

4
Light/X-ray/ultrasound activated delayed photon emission of organic molecular probes for optical imaging: mechanisms, design strategies, and biomedical applications DOI
Rui Qu, Xiqun Jiang, Zhen Xu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(22), P. 10970 - 11003

Published: Jan. 1, 2024

Versatile energy inputs, including light, X-ray and ultrasound, activate organic molecular probes to undergo different delay mechanisms, charge separation, triplet exciton stabilization chemical trap, for delayed photon emission.

Language: Английский

Citations

4